| 摘要 |
organic synthesis. SUBSTANCE: 2-alkylbenzothiazolin-3-ones are prepared by interaction of bis-amide of formula I: (I), wherein R is alkyl, with bisulfite or bisulfite source in water or water-containing organic liquid to form Bunte salt, which is further converted into desired product under alkaline conditions. Preferable alkyl R in formula I is butyl, hexyl, 2-ethylbutyl, 2-ethylhexyl, and cyclohexyl. EFFECT: improved preparation procedure.
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